Decadent Raspberry Chocolate Ganache Cake

Ingredients
For the Chocolate Cake:
1 3/4 cups all-purpose flour
3/4 cup unsweetened cocoa powder
1 1/2 teaspoons baking powder
1 1/2 teaspoons baking soda
1 teaspoon salt
2 cups granulated sugar
1/2 cup vegetable oil
2 large eggs
1 cup buttermilk
1 cup hot water
2 teaspoons vanilla extract
For the Raspberry Filling:
2 cups fresh raspberries
1/4 cup granulated sugar
1 tablespoon cornstarch
1 tablespoon lemon juice
For the Chocolate Ganache:
12 oz dark chocolate, chopped
1 cup heavy cream
Instructions